Experimental comparison of photogrammetry for additive manufactured parts with and without laser speckle projection
作者： D. Sims-Waterhouse , P. Bointon , S. Piano , R. K. Leach
DOI: 10.1117/12.2269507
关键词: Laser 、 Metal powder 、 Optics 、 Projection (set theory) 、 Photogrammetry 、 Point cloud 、 Speckle pattern 、 Materials science 、 Surface finish 、 Surface roughness
摘要: In this paper we show that, by using a photogrammetry system with and without laser speckle, large range of additive manufacturing (AM) parts different geometries, materials post-processing textures can be measured to high accuracy. AM test artefacts have been produced in three materials: polymer powder bed fusion (nylon-12), metal powder bed (Ti-6Al-4V) material extrusion (ABS plastic). Each artefact was then the photogrammetry both normal speckle projection modes the resulting point clouds compared with the CAD model. The results that result reduction cloud standard deviation from data up 101 μm. A complex relationship surface texture, geometry and is also observed discussed.
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